Are the experiences of his family members seeing strange extraterrestrial phenomena and being aware of extraterrestrial manipulations something only recent? Or has that been happening in the past all along, but perhaps not noticed without the recent LHP requests for lifting the veil to make ET actions more discernible intuitively?

As you saw intuitively, the latter is the case. You literally figured this out, that such things are happening with increasing frequency because of this thinning of the mind block in place that is an attempt to keep people in the dark about all the extraterrestrials are doing with their manipulations. The more this is stripped away, the more people will see signs of their manipulation and interference in human affairs, and that will be very helpful to the cause because it will lead to a further awakening and a growing concern about these violations of human sovereignty and free will at a fundamental level.